US4254593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shot or sand blasting machine
Assignee: Individual
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Filing: 1979-11-14
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Granted: 1981-03-10
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Expires: 1999-11-14
Abstract
Abstract A shot blasting machine for shot blasting wire or rod-like material is of the kind comprising two centrifuge wheels in a closed housing which has an inlet for blasting shot or sand, means for conducting the wire rod material to be blasted through the housing between the centrifuge wheels, and an outlet for scale blasted from the wire or rod material. The centrifuge wheels are rotated in the same direction as each other, the region between the wheels where blasting takes place is divided into two sections by a wall, which permits the passage of the material to be blasted through the region, the shot or sand, in operation passing from one wheel to the other wheel in one section and from the other wheel to the one wheel in the other section, and a guide device being disposed adjacent each centrifuge wheel one in each section to direct the shot or sand from the wheel against the material to be blasted. This arrangement economizes in power because the shot circulates through the two wheels and impinging streams of shot are avoided so that there is no destruction of the energy of the shot, and also the wear of the shot is minimized.
Inventors
- 👤 Clemens Paulfeuerborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:15
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/08; B24C3/10; B24C3/14; Y; Y10; Y10S; Y10S451/00; Y10S451/909
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
250 words
In a shot blasting machine for blasting elongated rod-like material, said machine comprising a substantially closed housing, means rotatably mounting a first centrifuge wheel in said housing, means rotatably mounting a second centrifuge wheel in said housing spaced from said first centrifuge wheel to define a blasting zone in said housing between said centrifuge wheels, means defining an inlet for blasting shot to said housing, means for conducting said rod-like material through said blasting zone in said housing, and means defining an outlet from said housing for scale blasted from said rod-like material, the improvement comprising driving means for rotating said first centrifuge wheel and said second centrifuge wheel in the same direction as each other, wall means dividing said blasting zone into a first section and a second section, said wall means having means permitting the passage of said rod-like material therethrough, a first guide device disposed adjacent said first centrifuge wheel in said first section, and a second guide device disposed adjacent said second centrifuge wheel in said second section, said first guide device being operative to guide the blasting shot from said first centrifuge wheel through said blasting zone to said second centrifuge wheel and said second guide device being operative to guide shot from said second centrifuge wheel through said blasting zone to said first centrifuge wheel, whereby said blasting shot is circulated between said first and second centrifuge wheels and is accelerated thereby and through said blasting zone to blast said rod-like material conducted therethrough.
Claim 2
Dependent Claim
250 words
In a shot blasting machine for blasting elongated rod-like material, said machine comprising a substantially closed housing, means rotatably mounting a first centrifuge wheel in said housing, means rotatably mounting a second centrifuge wheel in said housing spaced from said first centrifuge wheel to define a blasting zone in said housing between said centrifuge wheels, means defining an inlet for blasting shot to said housing, means for conducting said rod-like material through said blasting zone in said housing, and means defining an outlet from said housing for scale blasted from said rod-like material, the improvement comprising driving means for rotating said first centrifuge wheel and said second centrifuge wheel in the same direction as each other, wall means dividing said blasting zone into a first section and a second section, said wall means having means permitting the passage of said rod-like material therethrough, a first guide device disposed adjacent said first centrifuge wheel in said first section, and a second guide device disposed adjacent said second centrifuge wheel in said second section, said first guide device being operative to guide the blasting shot from said first centrifuge wheel through said blasting zone to said second centrifuge wheel and said second guide device being operative to guide shot from said second centrifuge wheel through said blasting zone to said first centrifuge wheel, whereby said blasting shot is circulated between said first and second centrifuge wheels and is accelerated thereby and through said blasting zone to blast said rod-like material conducted therethrough.
Claim 3
Dependent Claim
54 words
A machine as claimed in claim 1, wherein each of said guide devices comprises a first guide plate, a second guide plate, means mounting said guide plates face to face with a space between said plates, a wedge-shaped guide piece and means mounting said wedge-shaped guide piece in said space between said guide plates.
Claim 4
Dependent Claim
118 words
A machine as claimed in claim 1, and further comprising an air impeller, means mounting said air impeller to one of said centrifuge wheels for rotation therewith, and means defining an air inlet opening in said housing adjacent said air impeller whereby, in operation, said air impeller draws air through said air inlet opening into said housing and blows said air through said housing and out of said outlet for said scale, said outlet for said scale being in a portion of said housing which is shaded from the passage of said blasting shot between said centrifuge wheels by that one of said guide devices which is adjacent said centrifuge wheel to which said air impeller is mounted.
Claim 5
Dependent Claim
51 words
A machine as claimed in claim 3, further comprising sieve grating means and means mounting said sieve grating means across said outlet for said scale, said sieve grating means being operative to allow the passage of air and said scale therethrough and to prevent the passage therethrough of said blasting shot.
Claim 6
Dependent Claim
45 words
A machine as claimed in claim 4, further comprising means for collecting blasting shot, the passage of which is prevented by said sieve grating means and means for conducting said blasting shot collected by said collecting means to said blasting shot inlet of said housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |